Buttonhole attachment



.3, A. GUY

BUTTONHOLE ATTACHMENT March 1-,

'Filed. April 1.925 2 Sheets-Sheetl gwuvnfoo JAM/E5 A. 00%

March 1 1927. J. A.

BUTTONHOLE ATTACHMENT Filed April 3. 1925 2 Sheets-Sheet 2 gym 5555JAME5 A. 61/) Patented Mar. 1, 1927.

UNITED STATES JAMES A. GUY OF SEMIWAY, KENTUCKY.

BUTTONHOLE ATTACHMENT.

Application filed April 3, 1925. Serial No. 20,565.

This invention appertains to sewing machines and more particularly to anovel button hole attachment therefor.

The primary object of the present invention isthe provision of a novelbutton hole making attachment for the usual type of domestic orhousehold sewing machine, whereby button holes can be readily made on asewing machine in the home, without necessitating the working of thebutton holes by hand.

Another object of the invention is the provision ofa novel button holemaking attachment for domestic sewing machines embodying novel means forassociating the, same with the presser bar of the machine and novelmeans for operating the same from the needle bar of the sewing machine.

A further object of the invention is the a provision of a novel buttonhole making attachment for domestic sewing machines embodying a novelpresser foot adapted to reciprocate transversely of the work feedingbars, for moving the work relative to the needle during the forming ofthe stitches, whereby the zig-zag button hole stitches will be formed,novel means being provided for reciprocating the novel presser foot fromthe conventional needle bar.

A further object of the invention is to provide a novel means forconstructing the attachment whereby the same can be readily attachedwith the conventional type of domestic or household sewingmachine.

A still further object of the invention is to provide a novel buttonhole making device for sewing machines of the above character, whichwill be durable and efficient in use, one that will be simple'and easyto manufacture and one which can be placed upon the market andincorporated with a sewing machine at a small cost.

lVith these and other objects in view, the invention consists in thenovel construction,

arrangement and formation of parts, as will Figure 3 is a perspectiveview of the complete attachmen Figure 4 is a longitudinal sectionthrough the improved attachment,

Figure 5 is a horizontal section. through the attachment taken on theline 55 of Figure 4 looking in the direction of the arrows,

Figure 6 is a horizontal section taken on the line 66 of Figure 4looking in the direction of the arrows,

Figure 7 is a detail transverse section through the operating levertaken on the line 7 7 of'Figure 6 looking in the direction of thearrows,

Figure 8 is a detail perspective view show necting the operating leverwith the said needle bar,

Figure 11 is a detail the novel presser foot,

Figure 12 is a detail perspective view of the forward end of the baseplate of the at tachment, and

Figure 13 is a detail bottom'plan view of the presser foot plate.

Referring. to the drawings in detail, wherein similar referencecharacters designate corresponding parts throughout the several views,the letter A generally indicates the novel button hole making attachmentfora conventional domestic sewing machine B.

The sewing machine B can be considered of any conventional householdtype and includes the usual head or arm 15 carrying the dependingreciprocating needle bar 16: and presser foot bar .17. This presser footbar is adapted to be raised and lowered toward the work by means of theusual cam lever 18. The needle is adaptedto be reciprocated tovard thebed plate 19 on the sewing machinein the ordinary way which carries theusual throat plate 20 and reciprocating work feed bars 21. The needle 22is held on the needle bar in the usual manner, by means of a set screw23.

perspective view of lOO In accordance with this invention, when p 29 and30 heretobefore described.

lpresser foot bar.

it is desired to use the novel attachment A with the sewing machine B,the conventional presser foot (not shown) is removed from the presserfoot bar 17 and the attachment A is substituted therefor, as will bedescribed.

The novel attachment A embodies a base plate 25 having its forward edgeprovided with a depending guide flange 26 for the novel reciprocatingpresser foot 27. At the point of uncture of the guide flange 26 with thebase plate 25 inwardly directed end guide slots 28 are formed and theseslots receive guide flanges 29 and 30 formed on thepresser foot. Asclearly shown in Figure 3 the guide flange 29 is bent laterally toengage the upper face of the base plate 25, while the flange. 30 iscontinued above the base plate and provided with theslot $31 forapurpose, which will be later described. The presser portion 27 includesthe horizontally disposed presser plate provided with the elongatedneedle receiving slot 33 and the outwardly extending right angularly.dis posed guide plate 34. which carries flanges It is to be also notedthat the guide plate 34 of the novel presser foot 27 carries outwardlydirected guide flanges 85 for engaging the outer face of the dependingguide flange 26 of the base plate 25. The base plate 25 carries anypreferred type of means for connection with the presser bar 17 and thismeans varies according to the shape of the In the drawings, the presserfoot bar 17 is shown polygonal shaped in cross section and the plate 25provided with a rigid socket 36 polygonal shaped in cross section forreceiving the said" presser bar and this socket is provided with a setscrew 37 for impinging against the presser bar. The base plate 25embodies the rearwardly directed elongated flat arm 40,

the side edges of which are provided adjacent to the rear end of the armwith upstanding pivot cars 41. The upper terminals of the pivot ears 41carry a transverse pivot shaft 42 which rockably receives the yoke 43 ofthe operating lever 44. The yoke 43 is provided with a forwardlyextending U- shaped socket for receiving the rear end of the lever 44and the rear end of the lever is notched as at 46, as can be clearlyseen by referring to Figure 4 of the drawing. his to be noted that thelever 44 is riveted as at 47 or otherwise secured to the yoke, so thatthe yoke and lever operate as a unit. The U-shaped shank or socket 45 inconnection with the notched end 46 of the lever 44 defines a pocket forreceiving the cylindrical shank '48 of the rocking arcuate head 49,which extends downwardly and rearwardly toward the base plate 25 for apurpose which will be hereinafter more fully described. The rocking head49 is provided with an enlarged opening 50 through which extends thecross or pivot shaft 42 and the head is adapted to rock on its own axison the said cross shaft and in the pocket defined by the socket as wellas to operate on theshaft 42 in a vertical plane with the lever 44. Thisrocking head 49 is maintained in a centralized position relative to thelever 44 and in the same vertical plane therewith by means of leafsprings 51 which are an ranged on opposite sides of the rocking head andin engagement therewith. The springs 51 are retained in position, byhaving their inner ends inserted in the said socket 45. By thisconstruction it can be seen that when the rocking head 49 isrocked toone sideor the other against the tension of the said springs 51, thatthe springs will normally tend to return the head to its nor1nalcentralized position. The extreme forward or free end of the lever 44 isprovided with an angular slotted head 52 which is adapted to receive theset screw 23 of the needle bar 16. This head is adapted to slide on theset screw during the reciprocation of the needle bar and thereciprocation of the needle bar oscillates the lever on the cross orpivot shaft 42, whereby the arcuate head 49 will be swung toward andaway from the arm 40 of the base plate 25. Rockably mounted on the upperface of the arm 40 adjacent to the rear end thereof is a pivoted camplate 53. V

This cam plate 53 is mounted upon a pivot pin 54 which is also inalinement with. the longitudinal axis of the operating lever 44.'llie'outercnd of the cam plate 53 is provided with apointed extension55 to define the side inclined faces56 and these inclined faces 56terminate in recesses 57. The inner endof the cam plate 53 is pivotallyconnected as at58to the inner endof the swinging lever 59 whichisdisposed on the upper face of the said arm 40. This swinging lever 59isrockably and slidably mounted at a point intermediate its ends on a.pivot pin 60, which is adjustably carried by the arm 40. This pivot pinis adjustable in order to vary the throw of the leverand this pivot pinextends through a slot bl formed in thesai'd arm. The lever itself isprovided with a longitudinally extending slot 62 in order to permitthesame to slide on the said pivot pin. The forward end of the swinginglever 59 is provided with a laterally ex tending arm 63 which is mountedwithin the slot 31 formed in the flange 30of the reciprocatory presserfoot 27. It is to be also noted at this point that the pivots 54, 58 andare in longitudinal alinement.

In use of the improved device, the conventional presser foot is removedfrom the presser bar 17, as heretobefore described,and the lower endofthe bar is placed within the socket 36 and the set screw 37 isadjusted so as to impinge against'the bar. Theslotted oppositedirection.

arm 52 of the operating lever tt is now placed in engagement with theset screw ot' the needle bar 16, after which the goods is placed on thebed plate 19 of the machine in the ordinary manner. The cam lever 18 isnow operated so as to move the presser bar downward and the presser foot27 in engagement with the work. The machine is operated in the desiredmanner and during the reciprocation of the needle bar 16, the presscrfoot 27 will he slid transversely thereof and the toothed or lower faceof the bar will move the fabric transversely of the bed plate, so that azig-zag button hole stitch will be formed in the goods. As the needlebar 16 moves upwardly and carries with it the operating lever 44, therockable head 9 movable therewith will be swung downwardly and inwardlyabout its pivot 42 and upon said movement, the said head 49 will engageone of the inclined faces 56 of the ally and when it engages the recess57, it will cause the cam plate 53 to be rocked on its pivot 54, thisrocking of the cam plate also causing the swinging lever 759 to be movedand this movement will in turn move the presser foot 27 laterally toshift the work. When the needle bar 16 is then moved downwardly, therockable head 49 will be moved upwardly and rearwardly and when the samepasses beyond the pointed extension 55, it will be forced by the springunder tension over and in engagement with the opposite inclined face, sothat upon upward movement of the needle bar, the operation will berepeated and the cam lever moved in the The spring in question is placedunder tension as the rockable head is moved laterally upon itsengagement with the inclined face. Thus, it will be seen that upon thisrepeated operation, a zig-zag button hole stitch will be formed in thegoods. After the button hole has been formed, it is merely necessary tooperate the cam lever 18 and remove the goods from the bed plate. Thegoods can be now out by any suitable implement between the rows ofstitching to form the holes.

From the foregoing description, it can be seen that I have provided anexceptionally simple and durable button hole making at tachinent for aconventional domestic sewing machine.

Changes in details may be made without departing from the spirit or thescope of this invention, but z- \Vhat I claim as new is:

1. In a sewing machine attachment of the class described, a supportingplate, a presser foot slidably associated with the plate for engagingthe work and movable transversely thereof and having a needle receivingslot formed therein, an operating lever rockably mounted upon thesupporting plate, a swinging lever rockably and sli'dably mounted uponthe supporting plate at a pointintermediate its ends, means operativelyconnecting the forward end of the swinging-leverwith the presser foot, acam plate pivotally associated with the supporting plate, meanspi'votally connecting the cam plate and the swinging lever, and meansfor operating the cam plate from said operating lever.

2. A button hole making attachment for sewing machines comprising asupporting plate, a reciprocatory presser foo't associated with thesupporting plate for movementti'ansversely thereof and having aroughened vv'oik engaging face, an operating lever rockably mounted uponthe plate, a cam plate pivotally mounted upon the upper face of thesupporting plate having a rearwardly extending pointed extensiondefining oppo iitely inclined faces terminating in pockets, a rockahlehead carried by the lever provided with means for engaging the inclinedfaces of said cam plate, and resilient means engaging the opposite facesof the rockable head for holding the same in longitudinal alinementwith'the lever, and means operativeiy connecting the cam plate with thereciprocatory presser foot.

3. As a new article of manufacture, a button hole making attachment forsewing machines comprising a supporting plate having a guide flange atthe forward end thereof, a presser foot slidably mounted upon the flangetransversely of the supporting plate having a lower roughened workengaging surface and a needle receiving slot, a cam plate pivotallymounted upon the upper face of the supporting plate having oppositelyinclined faces terminating in pockets on each side of the longitudinalcenter of said cam plate, a lever slidably and pivotally mounted at apoint intermediate its ends upon the supporting plate, means foradjusting the pivot of the swinging lever on said supporting plate,means pivotally connecting the swinging lever and the cam platestogether, means connecting the forward end of the swinging lever withthe pressor foot, an operating lever pivotally mounted at its rear endon said supporting plate, a forwardly extending slotted head formed onthe forward end of the operating lever for connec tionwith thereciprocatory needle bar of the sewing machine, means connecting the supporting plate with the presser foot bar of the sewing machine, a headrockably carried oy the operating lever having a depending arm forengaging the inclined faces of the cam plate, and spring means normallyholding the rockable head in longitudinal alinement with said operatinglever.

In a sewing machine attachment of the class described, a supportin platea res er foot'associated with the plate and s l idahle transverselythereof, an operating lever pivotally mounted upon the supporting plate,a rockable head also mounted upon said supporting plate intermediate itsends and operable upon movement of said operating lefver,a cam platepivotally associated with the supporting plate and adapted to be engagedby. said head, and a swinging plate rockably and slidably mounted uponsaid supporting plate for operating the presscr foot upon movement ofthe said cam plate.

In a sewinginaehine attachment of the class described, a supportingplate, a presser foot slidably associated with the plate for engagingthe work, an operating lever pivotally niountedupon the supportingplate, a rockable head also mounted upon the supporting plateintermediate its ends and hav ing connections with the operating lover,a cam plate pivotully associated with the supporting plate, and aswinging plate roekably and slidahly mounted upon the supporting plateand connected with the said cam plate and pieeser foot;

6. In a sewing machine attachment of the class described, a supportingplate, a presser foot slidably associated with the plate for engagingthe work, an operating lever pivota lly mounted upon the supportingplate, a rockable head also mounted upon the supporting plate and beingconnected with said operating lever, a cam plate pivotally associatedwith the supporting plate, a. swing ing plate mounted upon thesupporting plate and having connections with the said cam plate andpresser foot, and resilient means for throwing the rockable head fromone side of the cam plate to the other side thereof upon operation ofthe operating lever.

7. In a sewing machine attachment of the class described, asupportingplate having ward end of the swinging lever with the presser:toot. an operating lever .pivotally mounted upon the suppoiting plate,and a head rookably carried by the operating lever and adapted tooscillate the cam plate upon its pivot upon operation of the operatingleverl In testimony whereof Iafiix my signature.

J AMES A. GUY.

